Reliability Analysis for the Smart Grid: From Cyber Control and Communication to Physical Manifestations of Failure

The Smart Grid is a cyber-physical system comprised of physical components, such as transmission lines and generators, and a network of embedded systems deployed for their cyber control. The objective was to qualitatively and quantitatively analyze the reliability of this cyber-physical system. The original contribution of the approach lies in the scope of failures analyzed, which crosses the cyber-physical boundary by investigating physical manifestations of failures in cyber control. As an example of power electronics deployed to enhance and control the operation of the grid, the authors study Flexible AC Transmission System (FACTS) devices, which are used to alter the flow of power on specific transmission lines. Through prudent fault injection, the authors enumerate the failure modes of FACTS devices, as triggered by their embedded software, and evaluate their effect on the reliability of the device and the reliability of the power grid on which they are deployed. The IEEE118 bus system is used as a case study, where the physical infrastructure is supplemented with seven FACTS devices to prevent the occurrence of four previously documented potential cascading failures.

  • Record URL:
  • Supplemental Notes:
    • This research was sponsored by the U.S. Department of Transportation, University Transportation Centers Program.
  • Corporate Authors:

    Center for Transportation Infrastructure and Safety

    University Missouri - Rolla, Civil Engineering - UMR
    325 Butler-Carlton Hall
    Rolla, MO  United States  65409

    Research and Innovative Technology Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Faza, Ayman Z
    • Sedigh, Sahra
    • McMillin, Bruce M
  • Publication Date: 2010-1


  • English

Media Info

  • Media Type: Web
  • Edition: Final Report
  • Features: Figures; References; Tables;
  • Pagination: 13p

Subject/Index Terms

Filing Info

  • Accession Number: 01153173
  • Record Type: Publication
  • Report/Paper Numbers: NUTC R203, Report No. 00016751
  • Contract Numbers: DTRT06-G-0014 (Grant)
  • Files: UTC, TRIS, USDOT
  • Created Date: Mar 23 2010 8:42AM